Change echo to puts characters together where it knows about them
together. This improves netconsole performance by greatly reducing
the number of packets that are sent.
Signed-off-by: Joe Hershberger <joe.hershber...@ni.com>
---
Changes in v2:
- Check for someone to specify "\c" more than once in each word
common/cmd_echo.c | 28 +++++++++++++++++++++-------
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/common/cmd_echo.c b/common/cmd_echo.c
index 43a6da5..1e499fb 100644
--- a/common/cmd_echo.c
+++ b/common/cmd_echo.c
@@ -30,17 +30,31 @@ int do_echo(cmd_tbl_t *cmdtp, int flag, int argc, char *
const argv[])
int putnl = 1;
for (i = 1; i < argc; i++) {
- char *p = argv[i], c;
+ char *p = argv[i];
+ char *nls; /* new-line suppression */
if (i > 1)
putc(' ');
- while ((c = *p++) != '\0') {
- if (c == '\\' && *p == 'c') {
- putnl = 0;
- p++;
- } else {
- putc(c);
+
+ nls = strstr(p, "\\c");
+ if (nls) {
+ char *prenls = p;
+
+ putnl = 0;
+ /*
+ * be paranoid and guess that someone might
+ * say \c more than once
+ */
+ while (nls) {
+ *nls = '\0';
+ puts(prenls);
+ *nls = '\\';
+ prenls = nls + 2;
+ nls = strstr(prenls, "\\c");
}
+ puts(prenls);
+ } else {
+ puts(p);
}
}
--
1.7.11.5
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
